Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2007FOCUS L4-2.3L VIN ZREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSEVAPORATIVE EMISSIONS SYSTEMTESTING AND INSPECTION
2007 Ford Focus L4-2.3L VIN Z
Evaporative Emissions System: Testing and Inspection
2007 Ford Focus L4-2.3L VIN ZSECTION Testing and Inspection
EVAPORATIVE EMISSION SYSTEM LEAK TEST
Special Tool(s)
Phase 1 - Leak Verification
1. Disconnect the upper vapor tube-to-evaporative emission (EVAP) canister purge valve quick connect coupling.
2. Connect the VACUTEC smoke machine to the upper EVAP canister purge valve fitting.
3. Connect the scan tool and OPEN the EVAP canister purge valve.
4. Using the scan tool, CLOSE the EVAP canister vent solenoid.
5. Using the smoke machine, pressurize the EVAP system.
6. Monitor the indicator flag on the smoke machine leak tester. If the measurement is below the indicator flag, the system has passed the leak test and the test procedure is complete. If the measurement is above the indicator flag, the system has failed the leak test. Proceed to Phase 2.
Phase 2 - System Leak Check
1. Introduce smoke from the smoke machine into the EVAP system.
2. Use the halogen light provided with the smoke machine to look for smoke coming from the EVAP system. This would indicate a leak point.
3. Repair any leaks as necessary.
4. Repeat the leak test until the system passes.
Special Tool(s):
Special Tool(s)
Phase 1 - Leak Verification
1. Disconnect the upper vapor tube-to-evaporative emission (EVAP) canister purge valve quick connect coupling.
2. Connect the VACUTEC smoke machine to the upper EVAP canister purge valve fitting.
3. Connect the scan tool and OPEN the EVAP canister purge valve.
4. Using the scan tool, CLOSE the EVAP canister vent solenoid.
5. Using the smoke machine, pressurize the EVAP system.
6. Monitor the indicator flag on the smoke machine leak tester. If the measurement is below the indicator flag, the system has passed the leak test and the test procedure is complete. If the measurement is above the indicator flag, the system has failed the leak test. Proceed to Phase 2.
Phase 2 - System Leak Check
1. Introduce smoke from the smoke machine into the EVAP system.
2. Use the halogen light provided with the smoke machine to look for smoke coming from the EVAP system. This would indicate a leak point.
3. Repair any leaks as necessary.
4. Repeat the leak test until the system passes.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.